I want to force user to download images. Not open in browser.

It is possible to use HTML5 this attribute download but currently only Chrome supports it.

I tried .htaccess solution but it doesn't work.

<Files *.jpg>
   ForceType application/octet-stream
   Header set Content-Disposition attachment
</Files>

How can I force download all my images if user click on the link ?

<a href="http://blablabla.com/azerty/abc.jpg" target="_blank" />Download</a>
php image .htaccess
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